An idea I'm toying with is to allow some if not most metamagics to apply to cantrips for free. With some exceptions (quicken, twin, empower, heighten) applying metamagic to a cantrip for free wouldn't break anything. This would do wonders to reinforce the theme of the sorcerer with potentially every casting.
A more concrete proposal.
From the get go, the sorcerer can add any of these metamagics for free to cantrips:
Subtle
Distant
Extend
Careful
Transmuted
At second level, you can apply these to leveled spells at its normal cost.
At third level, you pick one or two of the more powerful metamagics and you can apply them at their normal cost.
This is a recognition that not all metamagics are equal, and that allows you to apply them more liberally and freely. Possibly even without having to sacrifice spells cast in order to be flavorful every time you cast.
And all this enhanced by having just two more spells known at first level.
There's very few things more irritating than someone constantly complaining about rules they don't like or don't think works... but do absolutely nothing to try and fix it for themselves at their table. Instead they just come here onto ENWorld making the exact same complaints that WotC isn't "fixing things" for years on end.
Again, it doesn't matter what I personally do as a DM, because when I'm a player I'm playing on another DM's table. I welcome third party and do homebrew myself, but when I'm playing as a player, if it isn't official, it might as well not exist because I can't benefit from my own homebrew unless I find that special DM that admits some homebrew. If I cry and whine and complaing isn't because I'm unable to find a solution myself, it is because I can't implement a solution myself that I would be able to benefit from. (Do you remember the Enworld Noble? one of the oldest third party classes? I've never been able to play one. And I wrote the class.)